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    T.I.S. training manual. by Hardy, M.D

    Published 1975
    Book
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    Aspects of educational technology vol.lll. by Mann, A.P

    Published 1969
    Book
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    Preparing educational materials. by Harris, N.D.C

    Published 1979
    Book
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    Educational equipment.

    Published 1980
    Book
  10. 10